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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

93 SE - KNOCK!

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Old Oct 25, 2007 | 01:51 PM
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Check the wires...OMG
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Old Oct 25, 2007 | 02:37 PM
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Get new wires... Have the Cat back pressure tested

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Old Oct 25, 2007 | 02:39 PM
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I am not sure on the wires. They looked pretty darn good if they are really original. Could just be AC replacements. However that O2 and those wires need to be replaced for sure.
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Old Oct 25, 2007 | 02:40 PM
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Oh, and don't forget to replace the wires.
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